HackingStolen CredentialsCapture App DataData ExfiltratedCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDHealth (basic)PIIPHIMediumContained

STEEL PARTNERS HOLDINGS L.P.

bd_3ca7167cc02cf496 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Aug 2, 2020

To disclose

—

Affected

Not disclosed

Linked

8 filings

Confidence

80%

Full breach record for STEEL PARTNERS HOLDINGS L.P. →2 incidents on file

Steel Partners Holdings L.P. disclosed unauthorized access to one employee email account between April 18–29, 2020. The intrusion allowed a local download of the entire mailbox, which contained documents with names, SSNs, dates of birth, and health information (disability/workers' compensation) for employees, beneficiaries, and pension plan participants across numerous Steel Partners portfolio companies and pension plans. Steel Partners engaged a forensic firm, locked the account, required password resets, and implemented MFA improvements.

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Incident timeline

Apr 18, 2020

Begins

Aug 2, 2020

Filed

This filing is one of 8 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (7) · sorted by filing gap

New Hampshire State AGbd_d994bde2b3fef2842020-07-30 · +3dVerified
Massachusetts State AGbd_25cb6bbe7680f0202020-07-16 · +17dVerified
California State AGbd_d278d119b9afcdc02020-07-16 · +17dCandidate
Montana State AGbd_6be8759b2eb0d3482020-06-29 · +34dCandidate

Show 3 more filings ↓up to 34d gap

South Carolina State AGbd_88361305fd97eb212020-06-29 · +34dVerified
Indiana State AGbd_d1792ff303bb51542020-06-29 · +34dVerified
Delaware State AGbd_d8b05cdca0e423622020-06-29 · +34dVerified

Name: STEEL PARTNERS HOLDINGS L.P.
norm: steel partners

Name: STEEL PARTNERS HOLDINGS L.P.
norm: steel partners

Discovered: —
Breach occurred: Apr 18, 2020 – Apr 29, 2020
Materiality determined: —
Notification sent: Jul 28, 2020
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDHealth (basic)PIIPHI
Data elements: Social Security numberDate of birth
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1114 Email Collection
Threat actor: External
Initial access: valid_credentials

During the incident: Immediately initiated an investigation
Locked the compromised email account
Promptly engaged a forensic security firm to assist
Conducted a broader review of systems, confirming only one email account was impacted
Required a password reset for employees
Offered a complimentary two-year subscription to Experian IdentityWorks
Changes made: Implemented changes to the login process
Implemented stricter multi-factor authentication rules
Continued to work with the forensic security firm to further strengthen existing security measures
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 8 filings · 7 states

View merged incident ↗

Montana State AGJun 29 · first

South Carolina State AGJun 29 · first

Indiana State AGJun 29 · first

Delaware State AGJun 29 · first

Massachusetts State AG+17d

California State AG+17d

New Hampshire State AG+31d

California State AG+34d · this page

Pattern: first filing Jun 29 (MT), last Aug 2 (CA) — a 34-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://oag.ca.gov/ecrime/databreach/reports/sb24-192647
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 2, 2020
Raw hash: 81730a0edfe74482a5798cd7f8c796578eec43a03dc6aaef68985f3bc7d83de0

Linked disclosures

Regulatory filings (7) · sorted by filing gap

Reporting entitySTEEL PARTNERS HOLDINGS L.P.

Victim entitySTEEL PARTNERS HOLDINGS L.P.

IncidentUnauthorized Access

Stated responseImmediately initiated an investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov